Home / 161,745.13-223,205.27-90,123.61

Finding the Fourth Proportional to 161,745.13, 223,205.27 and 90,123.61

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Solution

The fourth proportional to 161,745.13, 223,205.27 and 90,123.61 is: 124,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,745.13 : 223,205.27 = 90,123.61 : x
  2. Step 2: Convert to fraction form
    161,745.13/223,205.27 = 90,123.61/x
  3. Step 3: Cross multiply
    161,745.13x = 223,205.27 × 90,123.61
  4. Step 4: Simplify right side
    161,745.13x = 20,116,064,252.81
  5. Step 5: Solve for x
    x = 20,116,064,252.81/161,745.13
  6. Step 6: Final answer
    x = 124,368.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.